> I have been using this forever and swear by it. I think it's been at least 10 years for me. One nice side effect of the design is that you can switch hands

> I have been using this forever and swear by it. I think it's been at least 10 years for me. One nice side effect of the design is that you can switch hands if/when your wrist gets tired (I write with my left hand and throw with my right hand, so ambidextrous trackballs work very well for me). I've had other trackballs along the way, but this one suits me best, all the more so given that it's small and lightweight (on the road most of the year).